Baxi Eco 3 Service Manual download pdf (Page 10)

Stop

Valve

Double

Check

Valve

DHW

Mains

Inlet

Return

Temporary

Hose

6.0 System Details

6.5 System Filling and Pressurising

1. A filling point connection on the central heating

return pipework must be provided to facilitate

initial filling and pressurising and also any

subsequent water loss replacement/refilling.

2. There are connection points on the mains cold

water inlet and central heating return isolating

taps to which the optional filling loop kit (Part No.

248221) can be assembled.

3. The filling method adopted must be in

accordance with the Water Supply (Water

Fittings) regulations and the Water Bylaws

(Scotland).

4. Your attention is drawn to: Paragraph 24 of

Schedule 2 Section 8 of the publication Water

Regulations Guide which gives recommendations

and guidance on approved methods for filling

sealed systems.

5. The sealed primary circuits may be filled or

replenished by means of a temporary connection

between the primary circuit and a supply pipe

provided the arrangement in accordance with

Diagram R24.2a of the Water Regulations Guide.

6. The temporary hose must be completely

removed at both ends after use.

6.6 Expansion Vessel

(Central Heating only)

1. The appliance expansion vessel is pre-charged

to 0.5 bar. Therefore, the minimum cold fill

pressure is 0.5 bar. The vessel is suitable for

correct operation for system capacities up to 125

litres. For greater system capacities an additional

expansion vessel must be fitted - refer to BS 7074

Pt 1.

6.7 Pressure Relief Valve (Fig. 9)

1. The pressure relief valve is set at 3 bar,

therefore all pipework, fittings, etc. should be

suitable for pressures in excess of 3 bar.

2. The pressure relief discharge pipe should be

not less than 15mm dia, run continuously

downward, and discharge outside the building,

preferably over a drain (Fig. 10). It should be

routed in such a manner that no hazard occurs to

occupants or causes damage to wiring or

electrical components. The end of the pipe should

terminate facing down and towards the wall.

3. The discharge must not be above a window,

entrance or other public access. Consideration

must be given to the possibility that boiling

water/steam could discharge from the pipe.

Fig. 8

Fig. 9

Fig. 10

Pressure Relief Valve

Discharge Pipe

Stop

Valve

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 43 44

Comments to this Manuals

No comments

Baxi Eco 3 Service Manual Page 10

Comments to this Manuals

Related products and manuals for Water heaters & boilers Baxi Eco 3